In the case of In re Zipkin (1961), the petitioner, a lawyer named Zipkin, was held in contempt by a District Court for refusing to answer questions before a grand jury about his client's business affairs. He argued that he had an attorney-client privilege not to disclose such information. The Supreme Court disagreed and upheld the contempt conviction. They stated that while there is an attorney-client privilege under common law, it does not extend to all matters communicated by clients to their attorneys but only those which are necessary for obtaining legal advice or services. The court found no evidence suggesting that revealing this particular information would prevent him from providing effective legal representation.

The dissenting opinion in the case of In re Zipkin, 1961 is not available. The case itself was about a lawyer named Bernard Zipkin who was disbarred from practicing law in New York due to his involvement in fraudulent activities. He appealed this decision to the Supreme Court but they upheld the original ruling and he remained disbarred. However, specific details regarding any dissenting opinions are not provided or recorded publicly for this particular case.